Pulmonary rehabilitation is an important element in caring for patients with chronic obstructive pulmonary disease (COPD). A non-invasive and independent intervention, it may help alleviate distress in patients and improve their quality of life. The most important point is that it may encourage patients to actively participate in their own healthcare. This article largely deals with the integrated concepts, mechanisms, and clinical applications of pulmonary rehabilitation, as well as the outcomes associated with its use in patients with COPD. The ultimate goal is that it will become a reference point for clinical care in the future.